diff --git a/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java b/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java
index 0be6e33ff..222446abb 100644
--- a/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java
+++ b/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.network;
 
 import com.velocitypowered.api.network.registry.Platform;
diff --git a/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java b/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java
index f532273a7..b45eb2d75 100644
--- a/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java
+++ b/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.network.registry;
 
 public interface Platform {
diff --git a/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java b/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java
index 91930547d..7d3b6edf9 100644
--- a/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java
+++ b/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.network.registry;
 
 import com.velocitypowered.api.network.PlatformVersion;